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A novel six-legged walking machine tool for

Jimu LIU, Yuan TIAN, Feng GAO

《机械工程前沿（英文）》 2020年第15卷第3期页码 351-364 doi: 10.1007/s11465-020-0594-2

摘要： The manufacture and maintenance of large parts in ships, trains, aircrafts, and so on create an increasing demand for mobile machine tools to perform operations. However, few mobile robots can accommodate the complex environment of industrial plants while performing machining tasks. This study proposes a novel six-legged walking machine tool consisting of a legged mobile robot and a portable parallel kinematic machine tool. The kinematic model of the entire system is presented, and the workspace of different components, including a leg, the body, and the head, is analyzed. A hierarchical motion planning scheme is proposed to take advantage of the large workspace of the legged mobile platform and the high precision of the parallel machine tool. The repeatability of the head motion, body motion, and walking distance is evaluated through experiments, which is 0.11, 1.0, and 3.4 mm, respectively. Finally, an application scenario is shown in which the walking machine tool steps successfully over a 250 mm-high obstacle and drills a hole in an aluminum plate. The experiments prove the rationality of the hierarchical motion planning scheme and demonstrate the extensive potential of the walking machine tool for operations on large parts.

关键词： legged robot parallel mechanism mobile machine tool in-situ machining

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Energy saving design of the machining unit of hobbing machine tool with integrated optimization

《机械工程前沿（英文）》 2022年第17卷第3期 doi: 10.1007/s11465-022-0694-2

摘要： The machining unit of hobbing machine tool accounts for a large portion of the energy consumption during the operating phase. The optimization design is a practical means of energy saving and can reduce energy consumption essentially. However, this issue has rarely been discussed in depth in previous research. A comprehensive function of energy consumption of the machining unit is built to address this problem. Surrogate models are established by using effective fitting methods. An integrated optimization model for reducing tool displacement and energy consumption is developed on the basis of the energy consumption function and surrogate models, and the parameters of the motor and structure are considered simultaneously. Results show that the energy consumption and tool displacement of the machining unit are reduced, indicating that energy saving is achieved and the machining accuracy is guaranteed. The influence of optimization variables on the objectives is analyzed to inform the design.

关键词： energy saving design energy consumption machining unit integrated optimization machine tool

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New method for computer numerical control machine tool calibration: Relay method

LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen

《机械工程前沿（英文）》 2007年第2卷第3期页码 301-304 doi: 10.1007/s11465-007-0053-3

摘要： Relay measurement method, which uses the kilogram-meter (KGM) measurement system to identify volumetric errors on the planes of computer numerical control (CNC) machine tools, is verified through experimental tests. During the process, all position errors on the entire plane table are measured by the equipment, which is limited to a small field. All errors are obtained first by measuring the error of the basic position near the original point. On the basis of that positional error, the positional errors far away from the original point are measured. Using this analogy, the error information on the positional points on the entire plane can be obtained. The process outlined above is called the relay method. Test results indicate that the accuracy and repeatability are high, and the method can be used to calibrate geometric errors on the plane of CNC machine tools after backlash errors have been well compensated.

关键词： positional volumetric information process repeatability

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NC flame pipe cutting machine tool based on open architecture CNC system

Xiaogen NIE, Yanbing LIU

《机械工程前沿（英文）》 2009年第4卷第2期页码 147-152 doi: 10.1007/s11465-009-0025-x

摘要： Based on the analysis of the principle and flame movement of a pipe cutting machine tool, a retrofit NC flame pipe cutting machine tool (NFPCM) that can meet the demands of cutting various pipes is proposed. The paper deals with the design and implementation of an open architecture CNC system for the NFPCM, many of whose aspects are similar to milling machines; however, different from their machining processes and control strategies. The paper emphasizes on the NC system structure and the method for directly creating the NC file according to the cutting type and parameters. Further, the paper develops the program and sets up the open and module NC system.

关键词： flame pipe cutting flame incision tracks CNC open architecture CNC system

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Rapid evaluation technology for CNC machine tool slide level based on built-in sensors

Yuqing ZHOU, Xuesong MEI, Gedong JIANG, Nuogang SUN,

《机械工程前沿（英文）》 2010年第5卷第1期页码 79-86 doi: 10.1007/s11465-009-0070-5

摘要： Slide level impacts the CNC machine tool performance. The deterioration of slide level will result in the torsional vibration of a feed-axis control system and lower the CNC machine tool control precision. It is necessary to investigate the rapid evaluation technology for the slide level of a CNC machine tool. In this paper, a new type of rapid evaluation method for machine tool slide level is proposed, which uses the linear scale, motor encoder, and AC servo motor current/output torque. To acquire level information, the built-in sensors test principle is profoundly investigated, and the mathematical model between the slide level and the measured data is established. In addition, two different level identification methods are comparatively analyzed. The analysis results of experiments show that it is simple, rapid, feasible, and reliable to use built-in sensors information for evaluating slide level.

关键词： slide level built-in sensors Stribeck effect model identification

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Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

《机械工程前沿（英文）》 2010年第5卷第4期页码 431-437 doi: 10.1007/s11465-010-0110-1

摘要： The theory and algorithm of the homogeneous transformation matrix (HTM) method are applied in establishing the kinematic error model of five-axis machining tool with two-axis turntable. Based on this model, a new method for the kinematic error separation in five-axis numerical control (NC) machining tool is proposed. In this study, three types of simultaneous three-axis control motions are designed for each rotary axis to identify the deviations. In the measurement, two translational axes and one rotary axis are simultaneously controlled to keep a constant distance between the tool and the worktable. Telescoping double ball bar is used to measure the relative distance between the spindle and the worktable in the motion of NC machining tool. Finally, the value measured by telescoping double ball bar is substituted into the model to obtain kinematic error of NC machining tool. Comparison has confirmed that the proposed method is high precision and can be applied to effectively and conveniently measure the five-axis machining tool.

关键词： error modeling error separation telescoping double ball bar five-axis numerical control (NC) machining tool

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Kinematic simulation of a parallel NC machine tool in the manufacturing process

ZHANG Jian-min, FAN Yu, JIA Dong-yun, ZOU Qiu-ling, WU Ying

《机械工程前沿（英文）》 2006年第1卷第2期页码 173-176 doi: 10.1007/s11465-006-0020-4

摘要： Aimed at enhancing the research status of parallel machine tools, this paper introduces the structure of a 6-SPS parallel machine tool and explains the application significance of the kinematic simulation of the manufacturing pro

关键词： 6-SPS kinematic simulation manufacturing application significance

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中国工作母机产业发展研究

王磊,卢秉恒

《中国工程科学》 2020年第22卷第2期页码 29-37 doi: 10.15302/J-SSCAE-2020.02.005

摘要：

工作母机在传统定义的各类机床的基础上，还包括增材制造装备、增减材复合制造装备，开展以工作母机为代表的我国高端制造装备产业发展战略研究，拓宽智能制造路径，支撑制造强国建设。本文在系统分析全球工作母机产业链发展动态及趋势、研判我国工作母机产业发展情况的基础上，对标世界先进水平，梳理出我国产业发展存在问题的具体领域：超精密机床基础研究和关键技术、大型机床加工精度和加工效率、国产机床整机性能可靠性和精度、先进增材制造工艺与复合制造工艺装备的共性技术研发、高端工作母机智能化水平。面向 2035 年远期发展目标，突出“十四五”阶段性亟需，针对性提出以重大设施制造工艺装备、超精密加工装备为代表的工作母机产业重点发展方向。研究建议：加强国家各类科技计划有效衔接，注重国家政策配套及评价体系协同，组建以工作母机为代表的高端制造装备共性技术协同创新体系。

关键词：工作母机产业发展重点方向高端制造数控装备

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面向机床的可重构监测诊断系统开发与应用

景敏卿,李猛,刘恒

《中国工程科学》 2013年第15卷第1期页码 34-38

摘要：

提出了一种基于“系统引擎+功能组件”的监测诊断系统平台架构，并针对机床4大功能部件模块，设计了3类（振动、功率和声发射）嵌入式监测单元，以强化底层监测信息获取的实时性和灵活性。笔者还开发了一系列机床常规监测诊断组件，并针对具有特殊监测诊断需求的数控机床功能部件，开发了相应的特殊功能组件，通过对功能组件的封装和加载实现具有特定需求的机床监测诊断系统，并在秦川磨床厂和大连机床厂进行实际应用。

关键词：机床监测诊断系统可重构系统引擎功能组件

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Development of meso-scale milling machine tool and its performance analysis

LI Hongtao, LAI Xinmin, LI Chengfeng, LIN Zhongqin, MIAO Jiancheng, NI Jun

《机械工程前沿（英文）》 2008年第3卷第1期页码 59-65 doi: 10.1007/s11465-008-0005-6

摘要： To overcome the shortcomings of current technologies for meso-scale manufacturing such as MEMS and ultra precision machining, this paper focuses on the investigations on the meso milling process with a miniaturized machine tool. First, the related technologies for the process mechanism studies are investigated based on the analysis of the characteristics of the meso milling process. An overview of the key issues is presented and research approaches are also proposed. Then, a meso-scale milling machine tool system is developed. The subsystems and their specifications are described in detail. Finally, some tests are conducted to evaluate the performance of the system. These tests consist of precision measurement of the positioning subsystem, the test for machining precision evaluation, and the experiments for machining mechanical parts with complex features. Through test analysis, the meso milling process with a miniaturized machine tool is proved to be feasible and applicable for meso manufacturing.

关键词： applicable machining mechanical overview positioning subsystem miniaturized

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走向智能机床 Article

陈吉红, 胡鹏程, 周会成, 杨建中, 谢杰君, 蒋亚坤, 高志强, 张成磊

《工程（英文）》 2019年第5卷第4期页码 679-690 doi: 10.1016/j.eng.2019.07.018

摘要：

随着现代信息技术特别是新一代人工智能技术的发展，智能机床技术迎来了新的发展机遇。本文在中国工程院定义的智能制造三个范式的基础上，系统地阐述了智能机床的概念、内涵、特征和体系架构。揭示了机床从手动机床演化到智能机床的三个阶段（数控机床、互联网+ 机床以及智能机床），详细分析了智能机床的自主感知与连接、自主学习与建模、自主优化与决策和自主控制与执行这四项智能化控制的实现原理，提出了智能机床通过数据学习形成并积累知识的本质特征，独创发明了指令域分析方法、物理和大数据混合建模技术、i 代码和双码联控等关键使能技术。基于以上研究，研制了智能数控系统和智能机床工业样机。通过基于Cyber NC 和双码联控的加工质量优化、基于大数据建模的工艺参数优化和基于深度学习的机床进给系统建模及误差补偿这三个智能化技术应用案例的实践，验证了新一代人工智能技术与制造技术的深度融合，是机床实现从“互联网+ 机床”向“智能+ 机床”演化的便捷有效途径。

关键词：智能制造智能机床智能数控系统新一代人工智能

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通过机器学习实现移动设备支付中绑定银行卡环节的欺诈侦测 None

Hao ZHOU, Hong-feng CHAI, Mao-lin QIU

《信息与电子工程前沿（英文）》 2018年第19卷第12期页码 1537-1545 doi: 10.1631/FITEE.1800580

摘要：移动互联网技术的快速增长促进了移动支付的增长，也带来更多移动交易欺诈。作为移动交易的第一步，移动设备上的银行卡绑定已成为欺诈尝试的主要目标。虽然该环节的欺诈成功尝试不会立即造成资金损失，但直接导致后续的快速欺诈交易，且可以欺骗现有欺诈侦测系统。近年来，金融机构和服务提供商通过实施基于规则的专家系统，并采用短消息服务（SMS）认证用户身份解决这个问题。但是，上述解决方案不足以应对数据泄漏和社会工程的挑战。在本研究中，我们介绍了几种传统机器学习算法，最后选择改进的梯度增强决策树（GBDT）算法软件库用于实际系统，即XGBoost。基于对绑卡行为的分析进一步扩展了多个特征，并计划在未来研究中添加历史交易数据进行分析。使用了由全球支付处理商提供的2017年全年真实绑定银行卡的数据集，研究结果和框架已被上述全球支付处理商的移动支付欺诈侦测系统的新设计方案采纳。

关键词：欺诈侦测；移动支付；银行卡绑定；移动设备；梯度增强决策树（GBDT）；XGBoost

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高速高精度机床热分析与热设计技术

高建民,史晓军,许艾明,赵博选

《中国工程科学》 2013年第15卷第1期页码 28-33

摘要：

随着机床高速高精度的技术发展，热问题已成为影响机床特性的重要因素。从提高机床的固有热性能出发，系统介绍了机床热特性分析、热结构优化及其冷却技术的理论和方法，以及国内外研究现状，并探讨了机床“热设计”理论与技术的最新进展和未来研究重点及趋势。

关键词：高速高精度机床热特性分析热结构优化冷却技术

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面向21世纪的柔性制造技术

邓宏筹

《中国工程科学》 2000年第2卷第9期页码 12-23

摘要：

市场全球化的竞争局面，使我国制造业面临严峻的挑战，如何扭转大多数企业缺乏竞争力的被动局面？积极的对策是主动迎上，改革生产经营管理体制，逐步调整产品结构，从发展中走出困境。在发展战略上，作者认为积极发展以数控机床为重点的机床工业，将对整个机械行业起促进作用。作者从以数控机床应用为基础的柔性制造技术的产生和应用着手，论证了这一发展战略的可行性及其对人类生产发展的历史必然性的顺应。作者对制造业在改革中碰到的一些问题发表了意见，希望有助于讨论和取得共识。

关键词：柔性制造技术数控机床柔性制造单元柔性制造系统柔性自动线

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Research and practice on system engineering management of a mobile payment project

Yongkai ZHOU, Hongfeng CHAI

《工程管理前沿（英文）》 2017年第4卷第2期页码 127-137 doi: 10.15302/J-FEM-2017011

摘要： The popularization of the mobile internet has given rise to demand for flexible and convenient payment methods. For China, it is necessary to keep pace with or even lead the trend of innovation and development in the age of mobile payment. From the perspective of systems engineering, this paper introduces research and implementation of China UnionPay’s mobile payment project. The general requirements and core engineering problems of the mobile payment project are summarized based on analyses of the characteristics and engineering difficulties of this project. Integration of innovative technologies is introduced to resolve the contradiction between ease-of-use and security. A rapid iterative development process is adopted to improve the product release efficiency as well as the users' experience. The launch of the mobile payment project also opens the window to coordinating and upgrading the whole payment industry chains.

关键词： systems engineering mobile payment engineering management method Mobile QuickPass national information security rapid iteration process financial security coordination and cooperation